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[email protected]NVD:CVE-2020-27827

HistoryMar 18, 2021 - 5:15 p.m.

CVE-2020-27827

2021-03-1817:15:13

CWE-400

[email protected]

web.nvd.nist.gov

openvswitch

lldp packets

denial of service

CVSS2

7.1

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

COMPLETE

AV:N/AC:M/Au:N/C:N/I:N/A:C

CVSS3

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS

0.006

Percentile

79.3%

JSON

A flaw was found in multiple versions of OpenvSwitch. Specially crafted LLDP packets can cause memory to be lost when allocating data to handle specific optional TLVs, potentially causing a denial of service. The highest threat from this vulnerability is to system availability.

Affected configurations

Nvd

Node

lldpd_projectlldpdRange<1.0.8

openvswitchopenvswitchRange2.6.0–2.6.9

openvswitchopenvswitchRange2.7.0–2.7.12

openvswitchopenvswitchRange2.8.0–2.8.10

openvswitchopenvswitchRange2.9.0–2.9.8

openvswitchopenvswitchRange2.10.0–2.10.6

openvswitchopenvswitchRange2.11.0–2.11.5

openvswitchopenvswitchRange2.12.0–2.12.2

openvswitchopenvswitchRange2.13.0–2.13.2

openvswitchopenvswitchRange2.14.0–2.14.1

Node

redhatopenshift_container_platformMatch4.0

redhatopenstackMatch10

redhatopenstackMatch13

redhatvirtualizationMatch4.0

redhatenterprise_linuxMatch7.0

redhatenterprise_linuxMatch8.0

Node

fedoraprojectfedoraMatch33

Node

siemenssimatic_hmi_unified_comfort_panels_firmwareRange<17

AND

siemenssimatic_hmi_unified_comfort_panelsMatch-

Node

siemenssimatic_net_cp_1243-1_firmwareMatch-

AND

siemenssimatic_net_cp_1243-1Match-

Node

siemenssimatic_net_cp_1243-8_irc_firmwareMatch-

AND

siemenssimatic_net_cp_1243-8_ircMatch-

Node

siemenssimatic_net_cp_1542sp-1_firmwareMatch-

AND

siemenssimatic_net_cp_1542sp-1Match-

Node

siemenssimatic_net_cp_1542sp-1_irc_firmwareMatch-

AND

siemenssimatic_net_cp_1542sp-1_ircMatch-

Node

siemenssimatic_net_cp_1543-1_firmwareMatch-

AND

siemenssimatic_net_cp_1543-1Match-

Node

siemenssimatic_net_cp_1543sp-1_firmwareMatch-

AND

siemenssimatic_net_cp_1543sp-1Match-

Node

siemenssimatic_net_cp_1545-1_firmwareMatch-

AND

siemenssimatic_net_cp_1545-1Match-

Node

siemenstim_1531_irc_firmwareRange<2.2

AND

siemenstim_1531_ircMatch-

Node

siemenssinumerik_one_firmwareRange<2.0.1

AND

siemenssinumerik_oneMatch-

References

bugzilla.redhat.com/show_bug.cgi?id=1921438

cert-portal.siemens.com/productcert/pdf/ssa-941426.pdf

lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3T5XHPOGIPWCRRPJUE6P3HVC5PTSD5JS/

lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JYA4AMJXCNF6UPFG36L2TPPT32C242SP/

lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SKQWHG2SZJZSGC7PXVDAEJYBN7ESDR7D/

mail.openvswitch.org/pipermail/ovs-dev/2021-January/379471.html

security.gentoo.org/glsa/202311-16

us-cert.cisa.gov/ics/advisories/icsa-21-194-07

CVSS2

7.1

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

COMPLETE

AV:N/AC:M/Au:N/C:N/I:N/A:C

CVSS3

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS

0.006

Percentile

79.3%

JSON

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